[mirror_ubuntu-zesty-kernel.git] / include / linux / mmc / host.h

/*
 *  linux/include/linux/mmc/host.h
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  Host driver specific definitions.
 */
#ifndef LINUX_MMC_HOST_H
#define LINUX_MMC_HOST_H

#include <linux/leds.h>
#include <linux/sched.h>

#include <linux/mmc/core.h>
#include <linux/mmc/pm.h>

struct mmc_ios {
	unsigned int	clock;			/* clock rate */
	unsigned short	vdd;

/* vdd stores the bit number of the selected voltage range from below. */

	unsigned char	bus_mode;		/* command output mode */

#define MMC_BUSMODE_OPENDRAIN	1
#define MMC_BUSMODE_PUSHPULL	2

	unsigned char	chip_select;		/* SPI chip select */

#define MMC_CS_DONTCARE		0
#define MMC_CS_HIGH		1
#define MMC_CS_LOW		2

	unsigned char	power_mode;		/* power supply mode */

#define MMC_POWER_OFF		0
#define MMC_POWER_UP		1
#define MMC_POWER_ON		2

	unsigned char	bus_width;		/* data bus width */

#define MMC_BUS_WIDTH_1		0
#define MMC_BUS_WIDTH_4		2
#define MMC_BUS_WIDTH_8		3

	unsigned char	timing;			/* timing specification used */

#define MMC_TIMING_LEGACY	0
#define MMC_TIMING_MMC_HS	1
#define MMC_TIMING_SD_HS	2
};

struct mmc_host_ops {
	/*
	 * Hosts that support power saving can use the 'enable' and 'disable'
	 * methods to exit and enter power saving states. 'enable' is called
	 * when the host is claimed and 'disable' is called (or scheduled with
	 * a delay) when the host is released. The 'disable' is scheduled if
	 * the disable delay set by 'mmc_set_disable_delay()' is non-zero,
	 * otherwise 'disable' is called immediately. 'disable' may be
	 * scheduled repeatedly, to permit ever greater power saving at the
	 * expense of ever greater latency to re-enable. Rescheduling is
	 * determined by the return value of the 'disable' method. A positive
	 * value gives the delay in milliseconds.
	 *
	 * In the case where a host function (like set_ios) may be called
	 * with or without the host claimed, enabling and disabling can be
	 * done directly and will nest correctly. Call 'mmc_host_enable()' and
	 * 'mmc_host_lazy_disable()' for this purpose, but note that these
	 * functions must be paired.
	 *
	 * Alternatively, 'mmc_host_enable()' may be paired with
	 * 'mmc_host_disable()' which calls 'disable' immediately.  In this
	 * case the 'disable' method will be called with 'lazy' set to 0.
	 * This is mainly useful for error paths.
	 *
	 * Because lazy disable may be called from a work queue, the 'disable'
	 * method must claim the host when 'lazy' != 0, which will work
	 * correctly because recursion is detected and handled.
	 */
	int (*enable)(struct mmc_host *host);
	int (*disable)(struct mmc_host *host, int lazy);
	void	(*request)(struct mmc_host *host, struct mmc_request *req);
	/*
	 * Avoid calling these three functions too often or in a "fast path",
	 * since underlaying controller might implement them in an expensive
	 * and/or slow way.
	 *
	 * Also note that these functions might sleep, so don't call them
	 * in the atomic contexts!
	 *
	 * Return values for the get_ro callback should be:
	 *   0 for a read/write card
	 *   1 for a read-only card
	 *   -ENOSYS when not supported (equal to NULL callback)
	 *   or a negative errno value when something bad happened
	 *
	 * Return values for the get_cd callback should be:
	 *   0 for a absent card
	 *   1 for a present card
	 *   -ENOSYS when not supported (equal to NULL callback)
	 *   or a negative errno value when something bad happened
	 */
	void	(*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
	int	(*get_ro)(struct mmc_host *host);
	int	(*get_cd)(struct mmc_host *host);

	void	(*enable_sdio_irq)(struct mmc_host *host, int enable);

	/* optional callback for HC quirks */
	void	(*init_card)(struct mmc_host *host, struct mmc_card *card);
};

struct mmc_card;
struct device;

struct mmc_host {
	struct device		*parent;
	struct device		class_dev;
	int			index;
	const struct mmc_host_ops *ops;
	unsigned int		f_min;
	unsigned int		f_max;
	unsigned int		f_init;
	u32			ocr_avail;
	struct notifier_block	pm_notify;

#define MMC_VDD_165_195		0x00000080	/* VDD voltage 1.65 - 1.95 */
#define MMC_VDD_20_21		0x00000100	/* VDD voltage 2.0 ~ 2.1 */
#define MMC_VDD_21_22		0x00000200	/* VDD voltage 2.1 ~ 2.2 */
#define MMC_VDD_22_23		0x00000400	/* VDD voltage 2.2 ~ 2.3 */
#define MMC_VDD_23_24		0x00000800	/* VDD voltage 2.3 ~ 2.4 */
#define MMC_VDD_24_25		0x00001000	/* VDD voltage 2.4 ~ 2.5 */
#define MMC_VDD_25_26		0x00002000	/* VDD voltage 2.5 ~ 2.6 */
#define MMC_VDD_26_27		0x00004000	/* VDD voltage 2.6 ~ 2.7 */
#define MMC_VDD_27_28		0x00008000	/* VDD voltage 2.7 ~ 2.8 */
#define MMC_VDD_28_29		0x00010000	/* VDD voltage 2.8 ~ 2.9 */
#define MMC_VDD_29_30		0x00020000	/* VDD voltage 2.9 ~ 3.0 */
#define MMC_VDD_30_31		0x00040000	/* VDD voltage 3.0 ~ 3.1 */
#define MMC_VDD_31_32		0x00080000	/* VDD voltage 3.1 ~ 3.2 */
#define MMC_VDD_32_33		0x00100000	/* VDD voltage 3.2 ~ 3.3 */
#define MMC_VDD_33_34		0x00200000	/* VDD voltage 3.3 ~ 3.4 */
#define MMC_VDD_34_35		0x00400000	/* VDD voltage 3.4 ~ 3.5 */
#define MMC_VDD_35_36		0x00800000	/* VDD voltage 3.5 ~ 3.6 */

	unsigned long		caps;		/* Host capabilities */

#define MMC_CAP_4_BIT_DATA	(1 << 0)	/* Can the host do 4 bit transfers */
#define MMC_CAP_MMC_HIGHSPEED	(1 << 1)	/* Can do MMC high-speed timing */
#define MMC_CAP_SD_HIGHSPEED	(1 << 2)	/* Can do SD high-speed timing */
#define MMC_CAP_SDIO_IRQ	(1 << 3)	/* Can signal pending SDIO IRQs */
#define MMC_CAP_SPI		(1 << 4)	/* Talks only SPI protocols */
#define MMC_CAP_NEEDS_POLL	(1 << 5)	/* Needs polling for card-detection */
#define MMC_CAP_8_BIT_DATA	(1 << 6)	/* Can the host do 8 bit transfers */
#define MMC_CAP_DISABLE		(1 << 7)	/* Can the host be disabled */
#define MMC_CAP_NONREMOVABLE	(1 << 8)	/* Nonremovable e.g. eMMC */
#define MMC_CAP_WAIT_WHILE_BUSY	(1 << 9)	/* Waits while card is busy */
#define MMC_CAP_ERASE		(1 << 10)	/* Allow erase/trim commands */
#define MMC_CAP_1_8V_DDR	(1 << 11)	/* can support */
						/* DDR mode at 1.8V */
#define MMC_CAP_1_2V_DDR	(1 << 12)	/* can support */
						/* DDR mode at 1.2V */

	mmc_pm_flag_t		pm_caps;	/* supported pm features */

	/* host specific block data */
	unsigned int		max_seg_size;	/* see blk_queue_max_segment_size */
	unsigned short		max_segs;	/* see blk_queue_max_segments */
	unsigned short		unused;
	unsigned int		max_req_size;	/* maximum number of bytes in one req */
	unsigned int		max_blk_size;	/* maximum size of one mmc block */
	unsigned int		max_blk_count;	/* maximum number of blocks in one req */

	/* private data */
	spinlock_t		lock;		/* lock for claim and bus ops */

	struct mmc_ios		ios;		/* current io bus settings */
	u32			ocr;		/* the current OCR setting */

	/* group bitfields together to minimize padding */
	unsigned int		use_spi_crc:1;
	unsigned int		claimed:1;	/* host exclusively claimed */
	unsigned int		bus_dead:1;	/* bus has been released */
#ifdef CONFIG_MMC_DEBUG
	unsigned int		removed:1;	/* host is being removed */
#endif

	/* Only used with MMC_CAP_DISABLE */
	int			enabled;	/* host is enabled */
	int			rescan_disable;	/* disable card detection */
	int			nesting_cnt;	/* "enable" nesting count */
	int			en_dis_recurs;	/* detect recursion */
	unsigned int		disable_delay;	/* disable delay in msecs */
	struct delayed_work	disable;	/* disabling work */

	struct mmc_card		*card;		/* device attached to this host */

	wait_queue_head_t	wq;
	struct task_struct	*claimer;	/* task that has host claimed */
	int			claim_cnt;	/* "claim" nesting count */

	struct delayed_work	detect;

	const struct mmc_bus_ops *bus_ops;	/* current bus driver */
	unsigned int		bus_refs;	/* reference counter */

	unsigned int		sdio_irqs;
	struct task_struct	*sdio_irq_thread;
	atomic_t		sdio_irq_thread_abort;

	mmc_pm_flag_t		pm_flags;	/* requested pm features */

#ifdef CONFIG_LEDS_TRIGGERS
	struct led_trigger	*led;		/* activity led */
#endif

#ifdef CONFIG_REGULATOR
	bool			regulator_enabled; /* regulator state */
#endif

	struct dentry		*debugfs_root;

	unsigned long		private[0] ____cacheline_aligned;
};

extern struct mmc_host *mmc_alloc_host(int extra, struct device *);
extern int mmc_add_host(struct mmc_host *);
extern void mmc_remove_host(struct mmc_host *);
extern void mmc_free_host(struct mmc_host *);

static inline void *mmc_priv(struct mmc_host *host)
{
	return (void *)host->private;
}

#define mmc_host_is_spi(host)	((host)->caps & MMC_CAP_SPI)

#define mmc_dev(x)	((x)->parent)
#define mmc_classdev(x)	(&(x)->class_dev)
#define mmc_hostname(x)	(dev_name(&(x)->class_dev))

extern int mmc_suspend_host(struct mmc_host *);
extern int mmc_resume_host(struct mmc_host *);

extern void mmc_power_save_host(struct mmc_host *host);
extern void mmc_power_restore_host(struct mmc_host *host);

extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
extern void mmc_request_done(struct mmc_host *, struct mmc_request *);

static inline void mmc_signal_sdio_irq(struct mmc_host *host)
{
	host->ops->enable_sdio_irq(host, 0);
	wake_up_process(host->sdio_irq_thread);
}

struct regulator;

#ifdef CONFIG_REGULATOR
int mmc_regulator_get_ocrmask(struct regulator *supply);
int mmc_regulator_set_ocr(struct mmc_host *mmc,
			struct regulator *supply,
			unsigned short vdd_bit);
#else
static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
{
	return 0;
}

static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
				 struct regulator *supply,
				 unsigned short vdd_bit)
{
	return 0;
}
#endif

int mmc_card_awake(struct mmc_host *host);
int mmc_card_sleep(struct mmc_host *host);
int mmc_card_can_sleep(struct mmc_host *host);

int mmc_host_enable(struct mmc_host *host);
int mmc_host_disable(struct mmc_host *host);
int mmc_host_lazy_disable(struct mmc_host *host);
int mmc_pm_notify(struct notifier_block *notify_block, unsigned long, void *);

static inline void mmc_set_disable_delay(struct mmc_host *host,
					 unsigned int disable_delay)
{
	host->disable_delay = disable_delay;
}

/* Module parameter */
extern int mmc_assume_removable;

static inline int mmc_card_is_removable(struct mmc_host *host)
{
	return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable;
}

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/linux/mmc/host.h
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* Host driver specific definitions.
	9	*/
	10	#ifndef LINUX_MMC_HOST_H
	11	#define LINUX_MMC_HOST_H
	12
af8350c7	13	#include <linux/leds.h>
d43c36dc	14	#include <linux/sched.h>
af8350c7	15
aaac1b47	16	#include <linux/mmc/core.h>
da68c4eb	17	#include <linux/mmc/pm.h>
1da177e4 LT	18
	19	struct mmc_ios {
	20	unsigned int clock; /* clock rate */
	21	unsigned short vdd;
	22
4be34c99	23	/* vdd stores the bit number of the selected voltage range from below. */
1da177e4 LT	24
	25	unsigned char bus_mode; /* command output mode */
	26
	27	#define MMC_BUSMODE_OPENDRAIN 1
	28	#define MMC_BUSMODE_PUSHPULL 2
	29
865e9f13 PO	30	unsigned char chip_select; /* SPI chip select */
	31
	32	#define MMC_CS_DONTCARE 0
	33	#define MMC_CS_HIGH 1
	34	#define MMC_CS_LOW 2
	35
1da177e4 LT	36	unsigned char power_mode; /* power supply mode */
	37
	38	#define MMC_POWER_OFF 0
	39	#define MMC_POWER_UP 1
	40	#define MMC_POWER_ON 2
f218278a PO	41
	42	unsigned char bus_width; /* data bus width */
	43
	44	#define MMC_BUS_WIDTH_1 0
	45	#define MMC_BUS_WIDTH_4 2
b30f8af3	46	#define MMC_BUS_WIDTH_8 3
cd9277c0 PO	47
	48	unsigned char timing; /* timing specification used */
	49
	50	#define MMC_TIMING_LEGACY 0
	51	#define MMC_TIMING_MMC_HS 1
	52	#define MMC_TIMING_SD_HS 2
1da177e4 LT	53	};
	54
	55	struct mmc_host_ops {
8ea926b2 AH	56	/*
	57	* Hosts that support power saving can use the 'enable' and 'disable'
	58	* methods to exit and enter power saving states. 'enable' is called
	59	* when the host is claimed and 'disable' is called (or scheduled with
	60	* a delay) when the host is released. The 'disable' is scheduled if
	61	* the disable delay set by 'mmc_set_disable_delay()' is non-zero,
	62	* otherwise 'disable' is called immediately. 'disable' may be
	63	* scheduled repeatedly, to permit ever greater power saving at the
	64	* expense of ever greater latency to re-enable. Rescheduling is
	65	* determined by the return value of the 'disable' method. A positive
	66	* value gives the delay in milliseconds.
	67	*
	68	* In the case where a host function (like set_ios) may be called
	69	* with or without the host claimed, enabling and disabling can be
	70	* done directly and will nest correctly. Call 'mmc_host_enable()' and
	71	* 'mmc_host_lazy_disable()' for this purpose, but note that these
	72	* functions must be paired.
	73	*
	74	* Alternatively, 'mmc_host_enable()' may be paired with
	75	* 'mmc_host_disable()' which calls 'disable' immediately. In this
	76	* case the 'disable' method will be called with 'lazy' set to 0.
	77	* This is mainly useful for error paths.
	78	*
	79	* Because lazy disable may be called from a work queue, the 'disable'
	80	* method must claim the host when 'lazy' != 0, which will work
	81	* correctly because recursion is detected and handled.
	82	*/
	83	int (enable)(struct mmc_host host);
	84	int (disable)(struct mmc_host host, int lazy);
1da177e4	85	void (request)(struct mmc_host host, struct mmc_request *req);
28f52482 AV	86	/*
	87	* Avoid calling these three functions too often or in a "fast path",
	88	* since underlaying controller might implement them in an expensive
	89	* and/or slow way.
	90	*
	91	* Also note that these functions might sleep, so don't call them
	92	* in the atomic contexts!
08f80bb5 AV	93	*
	94	* Return values for the get_ro callback should be:
	95	* 0 for a read/write card
	96	* 1 for a read-only card
	97	* -ENOSYS when not supported (equal to NULL callback)
	98	* or a negative errno value when something bad happened
	99	*
ee63a7d2	100	* Return values for the get_cd callback should be:
08f80bb5 AV	101	* 0 for a absent card
	102	* 1 for a present card
	103	* -ENOSYS when not supported (equal to NULL callback)
	104	* or a negative errno value when something bad happened
28f52482	105	*/
1da177e4	106	void (set_ios)(struct mmc_host host, struct mmc_ios *ios);
a00fc090	107	int (get_ro)(struct mmc_host host);
28f52482 AV	108	int (get_cd)(struct mmc_host host);
28f52482 AV	109
17b759af	110	void (enable_sdio_irq)(struct mmc_host host, int enable);
3fcb027d DM	111
	112	/* optional callback for HC quirks */
	113	void (init_card)(struct mmc_host host, struct mmc_card *card);
1da177e4 LT	114	};
	115
	116	struct mmc_card;
	117	struct device;
	118
	119	struct mmc_host {
fcaf71fd GKH	120	struct device *parent;
fcaf71fd GKH	121	struct device class_dev;
dce77377	122	int index;
f57b225e	123	const struct mmc_host_ops *ops;
1da177e4 LT	124	unsigned int f_min;
1da177e4 LT	125	unsigned int f_max;
88ae8b86	126	unsigned int f_init;
1da177e4	127	u32 ocr_avail;
4c2ef25f	128	struct notifier_block pm_notify;
1da177e4	129
55556da0	130	#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
f74d132c PO	131	#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
	132	#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
	133	#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
	134	#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
	135	#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
	136	#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
	137	#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
	138	#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
	139	#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
	140	#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
	141	#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
	142	#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
	143	#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
	144	#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
	145	#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
	146	#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
	147
f218278a PO	148	unsigned long caps; /* Host capabilities */
	149
	150	#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
23af6039 PO	151	#define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
	152	#define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */
	153	#define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */
	154	#define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */
	155	#define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */
b30f8af3	156	#define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */
8ea926b2	157	#define MMC_CAP_DISABLE (1 << 7) /* Can the host be disabled */
9feae246	158	#define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */
b1ebe384	159	#define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */
dfe86cba	160	#define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */
dfc13e84 HP	161	#define MMC_CAP_1_8V_DDR (1 << 11) /* can support */
	162	/* DDR mode at 1.8V */
	163	#define MMC_CAP_1_2V_DDR (1 << 12) /* can support */
	164	/* DDR mode at 1.2V */
f218278a	165
da68c4eb NP	166	mmc_pm_flag_t pm_caps; /* supported pm features */
da68c4eb NP	167
1da177e4 LT	168	/* host specific block data */
1da177e4 LT	169	unsigned int max_seg_size; /* see blk_queue_max_segment_size */
a36274e0	170	unsigned short max_segs; /* see blk_queue_max_segments */
1da177e4	171	unsigned short unused;
55db890a	172	unsigned int max_req_size; /* maximum number of bytes in one req */
fe4a3c7a	173	unsigned int max_blk_size; /* maximum size of one mmc block */
55db890a	174	unsigned int max_blk_count; /* maximum number of blocks in one req */
1da177e4 LT	175
1da177e4 LT	176	/* private data */
7ea239d9 PO	177	spinlock_t lock; /* lock for claim and bus ops */
7ea239d9 PO	178
1da177e4 LT	179	struct mmc_ios ios; /* current io bus settings */
	180	u32 ocr; /* the current OCR setting */
	181
97018580 DB	182	/* group bitfields together to minimize padding */
	183	unsigned int use_spi_crc:1;
	184	unsigned int claimed:1; /* host exclusively claimed */
	185	unsigned int bus_dead:1; /* bus has been released */
	186	#ifdef CONFIG_MMC_DEBUG
	187	unsigned int removed:1; /* host is being removed */
	188	#endif
	189
8ea926b2 AH	190	/* Only used with MMC_CAP_DISABLE */
8ea926b2 AH	191	int enabled; /* host is enabled */
4c2ef25f	192	int rescan_disable; /* disable card detection */
8ea926b2 AH	193	int nesting_cnt; /* "enable" nesting count */
	194	int en_dis_recurs; /* detect recursion */
	195	unsigned int disable_delay; /* disable delay in msecs */
	196	struct delayed_work disable; /* disabling work */
	197
b855885e	198	struct mmc_card card; / device attached to this host */
1da177e4 LT	199
1da177e4 LT	200	wait_queue_head_t wq;
319a3f14 AH	201	struct task_struct claimer; / task that has host claimed */
319a3f14 AH	202	int claim_cnt; /* "claim" nesting count */
f22ee4ed	203
c4028958	204	struct delayed_work detect;
01357dca	205
7ea239d9 PO	206	const struct mmc_bus_ops bus_ops; / current bus driver */
7ea239d9 PO	207	unsigned int bus_refs; /* reference counter */
7ea239d9	208
d1496c39 NP	209	unsigned int sdio_irqs;
	210	struct task_struct *sdio_irq_thread;
	211	atomic_t sdio_irq_thread_abort;
	212
da68c4eb NP	213	mmc_pm_flag_t pm_flags; /* requested pm features */
da68c4eb NP	214
af8350c7 PO	215	#ifdef CONFIG_LEDS_TRIGGERS
	216	struct led_trigger led; / activity led */
	217	#endif
	218
99fc5131 LW	219	#ifdef CONFIG_REGULATOR
	220	bool regulator_enabled; /* regulator state */
	221	#endif
	222
6edd8ee6 HS	223	struct dentry *debugfs_root;
6edd8ee6 HS	224
01357dca	225	unsigned long private[0] ____cacheline_aligned;
1da177e4 LT	226	};
	227
	228	extern struct mmc_host mmc_alloc_host(int extra, struct device );
	229	extern int mmc_add_host(struct mmc_host *);
	230	extern void mmc_remove_host(struct mmc_host *);
	231	extern void mmc_free_host(struct mmc_host *);
	232
01357dca RK	233	static inline void mmc_priv(struct mmc_host host)
	234	{
	235	return (void *)host->private;
	236	}
	237
97018580 DB	238	#define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
97018580 DB	239
fcaf71fd	240	#define mmc_dev(x) ((x)->parent)
11354d03	241	#define mmc_classdev(x) (&(x)->class_dev)
d1b26863	242	#define mmc_hostname(x) (dev_name(&(x)->class_dev))
1da177e4	243
1a13f8fa	244	extern int mmc_suspend_host(struct mmc_host *);
1da177e4 LT	245	extern int mmc_resume_host(struct mmc_host *);
1da177e4 LT	246
eae1aeee AH	247	extern void mmc_power_save_host(struct mmc_host *host);
	248	extern void mmc_power_restore_host(struct mmc_host *host);
	249
8dc00335	250	extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
1da177e4 LT	251	extern void mmc_request_done(struct mmc_host , struct mmc_request );
1da177e4 LT	252
17b759af NP	253	static inline void mmc_signal_sdio_irq(struct mmc_host *host)
	254	{
	255	host->ops->enable_sdio_irq(host, 0);
	256	wake_up_process(host->sdio_irq_thread);
	257	}
	258
5c13941a DB	259	struct regulator;
5c13941a DB	260
99fc5131	261	#ifdef CONFIG_REGULATOR
5c13941a	262	int mmc_regulator_get_ocrmask(struct regulator *supply);
99fc5131 LW	263	int mmc_regulator_set_ocr(struct mmc_host *mmc,
	264	struct regulator *supply,
	265	unsigned short vdd_bit);
	266	#else
	267	static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
	268	{
	269	return 0;
	270	}
	271
	272	static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
	273	struct regulator *supply,
	274	unsigned short vdd_bit)
	275	{
	276	return 0;
	277	}
	278	#endif
5c13941a	279
b1ebe384 JL	280	int mmc_card_awake(struct mmc_host *host);
	281	int mmc_card_sleep(struct mmc_host *host);
	282	int mmc_card_can_sleep(struct mmc_host *host);
	283
8ea926b2 AH	284	int mmc_host_enable(struct mmc_host *host);
	285	int mmc_host_disable(struct mmc_host *host);
	286	int mmc_host_lazy_disable(struct mmc_host *host);
4c2ef25f	287	int mmc_pm_notify(struct notifier_block notify_block, unsigned long, void );
8ea926b2 AH	288
	289	static inline void mmc_set_disable_delay(struct mmc_host *host,
	290	unsigned int disable_delay)
	291	{
	292	host->disable_delay = disable_delay;
	293	}
	294
71d7d3d1 MF	295	/* Module parameter */
	296	extern int mmc_assume_removable;
	297
	298	static inline int mmc_card_is_removable(struct mmc_host *host)
	299	{
	300	return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable;
	301	}
	302
1da177e4 LT	303	#endif
1da177e4 LT	304